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-rwxr-xr-xcodecs/mp3/src/csbtL3.c316
1 files changed, 316 insertions, 0 deletions
diff --git a/codecs/mp3/src/csbtL3.c b/codecs/mp3/src/csbtL3.c
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+/*____________________________________________________________________________
+
+ FreeAmp - The Free MP3 Player
+
+ MP3 Decoder originally Copyright (C) 1995-1997 Xing Technology
+ Corp. http://www.xingtech.com
+
+ Portions Copyright (C) 1998 EMusic.com
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ $Id$
+____________________________________________________________________________*/
+
+/**** csbtL3.c ***************************************************
+
+layer III
+
+ include to csbt.c
+
+******************************************************************/
+/*============================================================*/
+/*============ Layer III =====================================*/
+/*============================================================*/
+void sbt_mono_L3(MPEG *m, float *sample, short *pcm, int ch)
+{
+ int i;
+
+ ch = 0;
+ for (i = 0; i < 18; i++)
+ {
+ fdct32(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
+ window(m->csbt.vbuf, m->csbt.vb_ptr, pcm);
+ sample += 32;
+ m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511;
+ pcm += 32;
+ }
+
+}
+/*------------------------------------------------------------*/
+void sbt_dual_L3(MPEG *m, float *sample, short *pcm, int ch)
+{
+ int i;
+
+ if (ch == 0)
+ for (i = 0; i < 18; i++)
+ {
+ fdct32(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
+ window_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
+ sample += 32;
+ m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511;
+ pcm += 64;
+ }
+ else
+ for (i = 0; i < 18; i++)
+ {
+ fdct32(m,sample, m->csbt.vbuf2 + m->csbt.vb2_ptr);
+ window_dual(m,m->csbt.vbuf2, m->csbt.vb2_ptr, pcm + 1);
+ sample += 32;
+ m->csbt.vb2_ptr = (m->csbt.vb2_ptr - 32) & 511;
+ pcm += 64;
+ }
+
+
+}
+/*------------------------------------------------------------*/
+/*------------------------------------------------------------*/
+/*---------------- 16 pt sbt's -------------------------------*/
+/*------------------------------------------------------------*/
+void sbt16_mono_L3(MPEG *m, float *sample, short *pcm, int ch)
+{
+ int i;
+
+ ch = 0;
+ for (i = 0; i < 18; i++)
+ {
+ fdct16(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
+ window16(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
+ sample += 32;
+ m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255;
+ pcm += 16;
+ }
+
+
+}
+/*------------------------------------------------------------*/
+void sbt16_dual_L3(MPEG *m, float *sample, short *pcm, int ch)
+{
+ int i;
+
+
+ if (ch == 0)
+ {
+ for (i = 0; i < 18; i++)
+ {
+ fdct16(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
+ window16_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
+ sample += 32;
+ m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255;
+ pcm += 32;
+ }
+ }
+ else
+ {
+ for (i = 0; i < 18; i++)
+ {
+ fdct16(m,sample, m->csbt.vbuf2 + m->csbt.vb2_ptr);
+ window16_dual(m,m->csbt.vbuf2, m->csbt.vb2_ptr, pcm + 1);
+ sample += 32;
+ m->csbt.vb2_ptr = (m->csbt.vb2_ptr - 16) & 255;
+ pcm += 32;
+ }
+ }
+
+}
+/*------------------------------------------------------------*/
+/*---------------- 8 pt sbt's -------------------------------*/
+/*------------------------------------------------------------*/
+void sbt8_mono_L3(MPEG *m, float *sample, short *pcm, int ch)
+{
+ int i;
+
+ ch = 0;
+ for (i = 0; i < 18; i++)
+ {
+ fdct8(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
+ window8(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
+ sample += 32;
+ m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127;
+ pcm += 8;
+ }
+
+}
+/*------------------------------------------------------------*/
+void sbt8_dual_L3(MPEG *m, float *sample, short *pcm, int ch)
+{
+ int i;
+
+ if (ch == 0)
+ {
+ for (i = 0; i < 18; i++)
+ {
+ fdct8(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
+ window8_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
+ sample += 32;
+ m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127;
+ pcm += 16;
+ }
+ }
+ else
+ {
+ for (i = 0; i < 18; i++)
+ {
+ fdct8(m,sample, m->csbt.vbuf2 + m->csbt.vb2_ptr);
+ window8_dual(m,m->csbt.vbuf2, m->csbt.vb2_ptr, pcm + 1);
+ sample += 32;
+ m->csbt.vb2_ptr = (m->csbt.vb2_ptr - 8) & 127;
+ pcm += 16;
+ }
+ }
+
+
+
+}
+/*------------------------------------------------------------*/
+/*------- 8 bit output ---------------------------------------*/
+/*------------------------------------------------------------*/
+void sbtB_mono_L3(MPEG *m, float *sample, unsigned char *pcm, int ch)
+{
+ int i;
+
+ ch = 0;
+ for (i = 0; i < 18; i++)
+ {
+ fdct32(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
+ windowB(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
+ sample += 32;
+ m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511;
+ pcm += 32;
+ }
+
+}
+/*------------------------------------------------------------*/
+void sbtB_dual_L3(MPEG *m, float *sample, unsigned char *pcm, int ch)
+{
+ int i;
+
+ if (ch == 0)
+ for (i = 0; i < 18; i++)
+ {
+ fdct32(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
+ windowB_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
+ sample += 32;
+ m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511;
+ pcm += 64;
+ }
+ else
+ for (i = 0; i < 18; i++)
+ {
+ fdct32(m,sample, m->csbt.vbuf2 + m->csbt.vb2_ptr);
+ windowB_dual(m,m->csbt.vbuf2, m->csbt.vb2_ptr, pcm + 1);
+ sample += 32;
+ m->csbt.vb2_ptr = (m->csbt.vb2_ptr - 32) & 511;
+ pcm += 64;
+ }
+
+}
+/*------------------------------------------------------------*/
+/*------------------------------------------------------------*/
+/*---------------- 16 pt sbtB's -------------------------------*/
+/*------------------------------------------------------------*/
+void sbtB16_mono_L3(MPEG *m, float *sample, unsigned char *pcm, int ch)
+{
+ int i;
+
+ ch = 0;
+ for (i = 0; i < 18; i++)
+ {
+ fdct16(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
+ windowB16(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
+ sample += 32;
+ m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255;
+ pcm += 16;
+ }
+
+
+}
+/*------------------------------------------------------------*/
+void sbtB16_dual_L3(MPEG *m, float *sample, unsigned char *pcm, int ch)
+{
+ int i;
+
+ if (ch == 0)
+ {
+ for (i = 0; i < 18; i++)
+ {
+ fdct16(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
+ windowB16_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
+ sample += 32;
+ m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255;
+ pcm += 32;
+ }
+ }
+ else
+ {
+ for (i = 0; i < 18; i++)
+ {
+ fdct16(m,sample, m->csbt.vbuf2 + m->csbt.vb2_ptr);
+ windowB16_dual(m,m->csbt.vbuf2, m->csbt.vb2_ptr, pcm + 1);
+ sample += 32;
+ m->csbt.vb2_ptr = (m->csbt.vb2_ptr - 16) & 255;
+ pcm += 32;
+ }
+ }
+
+}
+/*------------------------------------------------------------*/
+/*---------------- 8 pt sbtB's -------------------------------*/
+/*------------------------------------------------------------*/
+void sbtB8_mono_L3(MPEG *m, float *sample, unsigned char *pcm, int ch)
+{
+ int i;
+
+ ch = 0;
+ for (i = 0; i < 18; i++)
+ {
+ fdct8(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
+ windowB8(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
+ sample += 32;
+ m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127;
+ pcm += 8;
+ }
+
+}
+/*------------------------------------------------------------*/
+void sbtB8_dual_L3(MPEG *m, float *sample, unsigned char *pcm, int ch)
+{
+ int i;
+
+ if (ch == 0)
+ {
+ for (i = 0; i < 18; i++)
+ {
+ fdct8(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
+ windowB8_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
+ sample += 32;
+ m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127;
+ pcm += 16;
+ }
+ }
+ else
+ {
+ for (i = 0; i < 18; i++)
+ {
+ fdct8(m,sample, m->csbt.vbuf2 + m->csbt.vb2_ptr);
+ windowB8_dual(m,m->csbt.vbuf2, m->csbt.vb2_ptr, pcm + 1);
+ sample += 32;
+ m->csbt.vb2_ptr = (m->csbt.vb2_ptr - 8) & 127;
+ pcm += 16;
+ }
+ }
+
+}
+/*------------------------------------------------------------*/